You should see a patch of green, yellow, or orange patch of eggs under the shrimps tail. FME, it's extremely difficult to sucessfully raise the younge. It's best to let nature take its coarse...consider it free food. My cleaner shrimp do this on a monthy basis, just saves me some fish food. I can't tell you how to raise the younge, but what I can say is that it's very difficult.
Graham